diff --git a/setup.py b/setup.py
index b4b91ca..dbc5946 100644
--- a/setup.py
+++ b/setup.py
@@ -36,7 +36,7 @@ def run(self):
                 shutil.rmtree(outdir)
 
 
-class CommandMixin(object):
+class CommandMixin:
     @classmethod
     def _read_and_stat(cls, src):
         from distutils.errors import DistutilsFileError
@@ -75,8 +75,10 @@ def copy_file(self, src, dst, preserve_mode=1, preserve_times=1, link=None,
                           data, re.MULTILINE)
 
         if not m:
-            return super(CommandMixin, self).copy_file(
-                    src, dst, preserve_mode=preserve_mode,
+            # Not using super() for better Python 2.x compatibility (distutils
+            # uses old-style classes).
+            return distutils.core.Command.copy_file(
+                    self, src, dst, preserve_mode=preserve_mode,
                     preserve_times=preserve_times, link=link)
 
         if os.path.isdir(dst):
diff --git a/version-history.rst b/version-history.rst
index eae2b57..7a38a85 100644
--- a/version-history.rst
+++ b/version-history.rst
@@ -1,10 +1,17 @@
 Version History
 ---------------
 
+2.4.2: 2021/01/03
+
+- Remove use of ‘super’ in ``setup.py`` to fix compatibility with
+  Python 2.7.  This changes build code only; no changes to the library
+  itself.
+
 2.4.1: 2020/11/20
 
 - Remove dependency on ``packaging`` module from ``setup.py`` to fix
-  installation on systems without that package.  [Thanks to Eric
+  installation on systems without that package.  This changes build
+  code only; no changes to the library itself.  [Thanks to Eric
   McLachlan for reporting]
 
 2.4.0: 2020/11/19  [pulled back from PyPi]